Accounting machine



Nov. 23, 1943. w. H. PETIT ACCOUNTING MACHINE Filed Aug. 24, 1956 10 Sheets-Sheet l OVER DRAFT SKIP FIG. 1

W l .L T. L b L. H wm PM mm mm 1 ST S 0 D CREDITS IN -INTEREST CM-CREDIT MEMO. EX-REBATE 4 CUPON 150- [RR D RT-RC THERE: LS- CRE E DEBITS OuNT WITH JOHN DOE ExiXcHANGE NK & TRUST C01 [mo CHECK ERE 50- R comzEcrED RT-RETD ITEM LS-LIST Tx-TAX BALANCE NO REM \M swanky;

BALANCE 1; DATE DATE DEPOSITS (1N Au ANY BA ANYWH DATE William H. Petit y His Cuba/M Nov; 23, 1943. w, H -f 2,334,953

ACCOUNTING MACHINE Filed Aug 24, 1936 10 Sheets-Sheet 2 Snventor William H. Petit LKALM HI: attorney Nov. 23, 1943. w. H. PETlT ACCOUNTING MACHINE Filed Aug. 24, 1936 10 Sheets-Sheet 5 William H. Petit Inventor By M His Attorney Nov; 23, 1943. w -fl-r ACCOUNTING MACHINE Filed Aug. 24, 1936 10 Sheets-Sheet 4 William H. Peti! Inventor By lime, M

His Attorney 23, 1943. w. H. PETIT ACCOUNTING IACHINE Filed 'Aug. 24. 1936 10 Sheets-Sheet 5 mm UE William H. Pefit Inventor By %Q) .2 ,M

His Attorn v Nov. 23, 1943.

W. H. PETIT ACCOUNTING IAGHINE l0 Sheets-Shea 6 7 FIG. 17 a Filed Aug. 24, 1936 FIG. 7

WilIiunl-Llefil Inventor M M His Attorney 7 Nov. 23, 1943. w 'n-r 2,334,953

ACCOUNTING MACHINE Filed Aug. 24, 1936 10 Sheets-Sheet 7 William H. Petit Inventor MLM His Attorney Nov. 23, 1943. w. H. PETIT 2,334,953

ACCOUNTING MACHINE Filed Aug. 24, 1936 10 Sheets-Sheet 8 William H. Petit Inventor Hisv Attorney NOV. 23,1943. w PETIT 2,334,953

ACCOUNTING MACHINE Filed Aug. 24, 1936 William H. Petil Inventor His Attorney 10 Sheets-Sheet 9 Nov. 23, 1943.

w. H. PETlT 2,334,953

ACCOUNTING MACHINE Filed Aug. 24, 1936 1O Sheets-Sheet 1O Jnnentor William H. Peti! H (Ittorneg Patented Nov. 23, 1943 UNITED STATES PATENT OFFICE National Cash Register Company,

Dayton,

Ohio, a corporation of Maryland Application August 24, 1936, Serial No. 97,564

11 Claims.

This invention relates to bookkeeping or accounting machines and the like and is particularly directed to machines of the type illustrated and described in Letters Patent of the United States No. 1,197,278 and No. 1,203,863, issued respectively September 5, 1916, and November '7, 1916, to Halcolm Ellis, and Patent No. 1,819,084, issued August 18, 1931, to Emil JohnEns.

The present invention comprises an auxiliary keyboard applied to the well known Ellis type of accounting machine illustrated and described in the above patents, and in its present adaptation, is arranged as a bank service machine used for balancing individual checking accounts. However, it is not the desire to restrict the use of this invention to the Ellis type of machine, as it may be easily applied to various other machines; neither is it the desire to limit this invention to any particular business system, as it may easily be adapted for use in practically any presentday business system.

In order that accounting machines may be used successfully in present-day complex, business systems, involving large amounts, it is necessary that such machines have a high capacity keyboard arranged as compactly as possible. Various methods have been used heretofore to accomplish this result. The present invention comprises an auxiliary keyboard in which have been incorporated the date keys, the symbol keys, and" a ribbon control key ordinarily referred to as the black key. The auxiliary keyboard permits the elimination from the main keyboard of all keys commonly referred to as printing keys, and the space thus acquired may be utilized for additional rows of amount keys, check counting keys, or the like. Obviously, the auxiliary keyboard may be used for other purposes than for date printing and symbol printing keys. For example, this additional keyboard space may be used for amount keys, check counting keys, etc.

With the above brief introductory statement in mind, it is broadly an object of this invention to increase the keyboard capacity of machines of the class referred to above by incorporating therein an auxiliary keyboard.

Another object of this invention is the provision of novel means whereby a plurality of rows of keys control a single actuator.

Another object is the provision of means to control the zero latch for a single actuator by a plurality of rows of keys.

An object of'this invention is to supply means to automatically release the keys ofthe auxiliary keyboard.

A further object is to provide manual means for releasing the keys of the auxiliary keyboard.

A still further object is the provision of means for locking the keys of the auxiliary keyboard against release or depression during machine operation.

Another object is to provide means for controlling the manual and automatic release of certain keys.

With these and incidental objects inview, the invention includes certain novel features of construction and combinations of parts, the essential elements of which are set forth in appended claims and a preferred form or embodiment of which ishereinafter described with reference to the drawings which accompany and form a part of this specification.

In the drawings:

Fig. 1. is a diagrammatic top plan view of the main and auxiliary keyboards of the machine embodying the invention.

Fig. 2 is a facsimile of a fragment of a ledger sheet prepared in the machine of this invention.

Fig. 3 is a longitudinal sectional view taken just to the right of one of the amount banks of the main keyboard and along line 3-3, Fig. 6B, of the auxiliary keyboard.

Fig. 4 is a sectional View of one of the rows of keys of the auxiliary keyboard.

Fig. 5 is a sectional view takenalong line 5-5 Fig. 4 showing a top plan view of the stems of the keys.

Figs. 6A and 6B together constitute, an elevation of the auxiliary keyboard as observed, from the front of the machine with the case broken away.

Fig. 7 is a perspective view of the actuator control cam for the symbol keys.

Fig. 8 is a detail View, partially sectioned, of the actuator control cam shown in Fig. '7.

Fig. 9 is a perspective view of the mechanism for controlling the releasing of the symbol keys.

Fig. 10 is a sectional view along line Ill-Iii Fig. 6B showing the key releasing mechanism for the auxiliary keyboard.

Fig. 11 is a detail view of the release controlling mechanism for the symbol keys.

Fig. 12 is a sectional View taken along line |2- I2 Fig. 6B, illustrating the mechanism that locks the keys of the auxiliary keyboard during machine operation.

Fig. 13 is a detail View of a part of the locking mechanism shown in Fig. 12.

Fig. 14 is a sectional view taken along line l4' 7 [4 Fig. 6A, showing the mechanism for manual.-

boards and the manner in which they positioni their respective printing sectors.

GENERAL DESCRIPTION The novelty of the present invention residesin an auxiliary keyboard for accounting machines of the type referred to at the beginning of this specification. The auxiliary keyboard is located directly in front of the main keyboard, is supported by an extension of the regular machine base, and is enclosed in a suitable extension of the machines case or cabinet. In the embodiment shown, the auxiliary keyboard includes month, day, and year keys, a pluralityof symbol printing keys, and a black key. The black key and its associated mechanism will be thoroughly treated in a separate application and therefore will be treated only in a general way herein. By removing the date keys and the symbol keys from the main keyboard, space is provided for additional rows of keys, which mate rially increases the keyboard capacity of the machine. The keys of the auxiliary keyboard are not limited to the uses outlined above but may, with minor alterations, be utilized for any desired purpose, such as, amount entering, or as control keys.

The keys of the auxiliary keyboard are arranged in groups containing from three to twelve keys, each group controlling its respective actuator which in turn positions a printing sector commensurate with the value of the depressedkey. The month group consists of. three rows of four keys each, the tens of days group consists of a single row of three keys, the units of days group consists of three rows of three keys each, and the year group consists of a single row of four keys. The date keys are stay-down keys in that they are not automatically released at the end of each machine operation but may be manually released by means of a release key incorporated in the auxiliary keyboard.

The symbol keys consist of two rows of four keys each, which control the positioning of a symbol'actuator, which in turn positions a symbol type sector in accordance with the depressed symbol key. The symbol keys are automatically released at the end of each machine operation and furthermore may be manually released by means DETAILED DESCRIPTION Frame work Referring to Figs. 3 and 18, th mechanism 1y held in alignment by means of a cross frame 63 and various other cross frames, rods, and shafts. The mechanism of the machine, including the main and the auxiliary keyboards, is enclosed in a suitable case or cabinet 64, which is in turn secured to the machine base 62. A traveling carriage 65, similar to that used on typewriters, is supported for lateral movement by means of ways thereon in cooperation with corresponding ways mounted upon the top of the case 64. The traveling carriage 65 rotatably supports a platen roll 66 which presents record material to the recording means which includes an inking ribbon, not shown, and a plurality of type sectors including a symbol type sector 6?.

Main keyboard and operating mechanism The frame work of the main keyboard of the instant machine comprises a top plate 68, a right and a left end plate, not shown, and a partition plate 69 for each row of keys, and said keyboard frame work is secured to the frames 60 and BI by means of the plate 68. The keys of the main keyboard include a plurality of denominational rows of amount keys 10 (Figs. 1 and 3), a row of control keys H, an overdraft key 12, a vertical feed starting bar 13, a regular starting bar 14, and a skip" tabulating starting bar 15.

Depressing one of the amount keys 10 (Fig. 3) against the tension of a spring 8|, moves a stud 16 in the lower end of the stem thereof into the path of a corresponding graduated step 17 on the forward end of an actuator rack 18, mounted for horizontal sliding movement by means of a slotted rod 19 and notched bar 80, both of which are supported by the frames 60 and 6!. The right hand end of the actuator 18, as here viewed, has two sets of rack teeth arranged to cooperate respectively with a corresponding wheel of a No.

.1 or balance totalizer and a corresponding wheel of a No. 2 or adding totalizer. The No. 1 and No. 2 totalizers are mounted in a frame work 82 attached to the rear of the frame 60 and 6|. While only two totalizers are here shown, it is but a matter of assembly to add additional totalizers by attaching the frame work thereof to the totalizer frame 82.

'The different totalizers are selected for addition and the machine is conditioned for adding operations by means of stops (not shown) mounted upon the traveling carriage 65, in cooperation with hanging bar levers, not shown. These stops also are tabulating stops and locate the different columns of the record material opposite the type sectors. The stops on the travelling carriage are also used to condition the balance totalizer for subtract operations. The different totalizers are selected and the machine is conditioned for nonadd, sub-total, total, and subtract operations by means of the control keys H. For further details of this mechanism, attention is directed to the United States patent to Emil John Ens, No. 1,819,084.

One cycle of movement of a main operating shaft 83 (Fig. 17) is required to operate the machine in non-adding, adding, subtracting, and

of the machine embodying this invention is sup- I ported by a right frame 60 and a left frame 6|, mounted upon a machine base 62, and rigidsub-total and total operations, and three cycles of movement of said main shaft are required for overdraft operations. The main shaft 83 is journaled in the frames 60 and BI and has secured to its right end an arm 84 connected by a link 85 to the driven memebr of a clutch device (not shown) the driving member of which is operatively connected to an electric motor of conventional de- "sign but preferably one of the character illustrated and described in Letters Patent of the United States No. 1,601,102, issued September 28, 1926, to F. W. Bernau.

Depressing any one of the starting bars 13, '14 or (Figs. 1) causes the motor clutch mecha nism to become effective to operate the main shaft 83 through one cycle of movement. Furthermore, depressing the vertical starting bar 13 causes the platen roll 86 (Fig. 3) to be revolved to linespace the record material wound therearound and the skip tabulating starting bar 15 causes the travelling carriage 65 to be skip tabulated to a predetermined column. This mechanism forms no part of this invention and will not be described herein. For further details of this mechanism, a

see the United States patent to Raymond A. Christian, No. 2,082,098, filed June 25, 1934, and issued June 1, 1937. One cycle of movement of the main shaft 83 consists of an oscillatory movement, first counter-clockwise and back to normal position, through an approximate angle of 60 degrees. After the shaft 83 has completed its cycle of movement the motor clutch mechanism is automatically rendererd ineffective and the depressed starting bar is restored upwardly to normal position.

Oscillating movement of the main shaft 83 (Fig. 17) and the arm 84, by means of a roller 86 carried by said arm 84 in cooperation with a cam slot 81 in a plate 88 secured on the right-hand end of a leading frame shaft 89 journaled in the frames 68 and 6!, causes said plate 88 and said shaft 89 to rock first counter-clockwise and then back to normal position. A leading frame 90 (Fig. 3) has downwardly extending arms 9|, secured to the shaft 89, which support a leading frame bail 92 which is resiliently connected to the actuator 18.

In non-adding, adding and subtracting operations the initial movement counter-clockwise of the shaft 89 and the leading frame 90 causes the actuator 18 to move in unison therewith until one of the graduated steps 11 thereon engages the corresponding square stud 16 in the depressed amount key 10. This positions the actuator 18 in accordance with the depressed amount key and said actuator in turn positions the amount type sector for that particular bank, which is similar in every respect to the symbol type sector 61 here shown. After the amount actuator 18 and the type sector therefor have thus been positioned, the roller 86 (Fig. 17) in cooperation with a cam slot 93 in an arm 94 secured on an aligner shaft 95 journaled in the frames 68 and El, rocks said arm 94 and said shaft 95 clockwise to cause an aligning bar 98 (Fig. 3) to align and retain the actuator 18 and its printing sector in set positions.

The arm 84 (Fig. 17) carries a stud 91 which normally engages a notch in a link 98, the upper end of which is connected to an arm 89, on an extension of an arm I08 secured on a printer operating shaft Hll journaled in the right frame 68 and the frame work of the printer mechanism. The arms 89 and I90 are flexibly connected to each other by means of a spring I02 stretched therebetween. After the amount actuators and their corresponding printing sectors have been positioned and aligned, as explained above, initial movement clockwise of the shaft IBI, under influence of the arms I80 and 99 and the link 98, releases said spring sectors to the action of a spring which causes said printing sectors in cooperation with an inking ribbon (not shown) to imprint the value of the depressed amount keys upon the record material carried by the platen roll 66.

It will be noted that the configuration of the cam slot 81 (Fig. 17) causes the plate 88 and the shaft 89 to dwell after they have completed their initial movement counter-clockwise. In adding operations during this dwell of the shaft 89, the wheels of the selected totalizer or totalizers are engaged with the actuators 18 and return movement forwardly of said actuators, under influence of the leading frame bail 92, rotates the wheels of said selected totalizer or totalizers to add therein the amount set up on the keyboard. After the actuators 18 have completed their return movement forwardly the wheels of the selected totalizer or totalizers are disengaged therefrom.

In subtract operation the wheels of the No. 1 or balance totalizer are engaged with the actuators 18 prior to their initial movement rearwardly and said wheels are therefore rotated in a reverse direction to subtract therefrom the amount set up on the keyboard. After the actuators 18 have completed their initial movement rearwardly the wheels of the balance totalizer are disengaged therefrom.

In subtotal and total operations the wheels of the selected totalizer are engaged with the amount actuators 18 prior to their initial movement rearwardly, which movement rotates said wheels reversely until the teeth of tripping cams, secured thereto, contact the teeth of the corresponding add transfer pawls for said totalizer. This 10- cates the totalizer wheels at zero and positions the actuators 18 in accordance with the amount on said totalizer wheels. In total operations the totalizer wheels are moved out of engagement with the actuators 18 prior to their return movement forwardly and consequently remain at zero. In subtotal operations the wheels of the selected totalizer remain in engagement with the actuators 18 during their return movement forwardly and are consequently returned to their original positions.

The overdraft key 12 (Fig. 1) is normally locked against depression. However, occurrence of an overdraft in the No. 1 or balance totalizer unlocks said overdraft key 12 and simultaneously locks the balance key and the subbalance key 1| against depression, thus notifying the operator that the balance totalizer has been overdrawn. Depressing the overdraft key 12 releases the machine for an overdraft operation consisting of three cycles of movement of the shaft 83 (Fig. 17) and all of the machine mechanism with the exception of the printer mecha nism. During these three cycles of movement the complementary amount of the overdraft is transposed to a true negative balance and this true negative balance printed upon the record material wound around the platen roll 66. It is unnecessary for the printing mechanism to function during the first two cycles of an overdraft operation, consequently the link 98 (Fig. 17) is shifted out of engagement with the stud 91 into engagement with a stationary stud I83 by mechanism, not here shown but well known in the art, and remains thus disengaged until the final or third cycle of an overdraft operation, when said link 98 is again engaged with the stud 9'! to cause the printing mechanism to function, to record the true negative balance. For further details of the mechanism used in overdraft operations, see the United States patent to Charles L. Lee, No. 2,079,355, filed April 14, 1932, and issued May 4, 1937.

AUXILIARY KEYBOARD The auxiliary keyboard, which forms the novelty of the present invention, is a self-contained unit mounted directly in front of the regular keyboard. As previously stated, this keyboard includes date printing keys and symbol printing keys. However, the uses to which the keys of the auxiliary keyboard are put are discretionary and this additional keyboard space may, with slight alterations, be used for any desired purpose. The date and the symbol printing keys are arranged in groups composed of one, two, and three rows of keys and each group of keys controls the positioning of its corresponding actuator, which in turn positions the printing sectors for the respective groups of keys in proportion to the amount of movement allowed by the depressed keys.

The symbol keys are automatically released at the end of each machine operation but this releasing may be controlled by means of a manually set device. The symbol keys may be manually released at will by means of the regular release key 1I (Fig. 1) which also releases the keys of the main keyboard. The date keys are not automatically released at the end of the machine operation but these keys may be manually released at will by means of a release key incorported in the auxiliary keyboard. Located on the extreme left of the auxiliary keyboard is a black key III] which controls the bichrome inking ribbon in subtract operations. Depressing the black key causes subtractive items, which are usually printed in red, to be printed in black.

As the black key and its associated mechanism are fully described in a separate application, further mention of this key will not be made herein.

The auxiliary keyboard will now be described in detail.

Auxiliary keyboard frame work Directing attention to Figs. 1, 3, 6A and 6B, the frame work of the auxiliary keyboard comprises a top plate I04, a back plate I05, right and left end plates I06 and I01, and a plurality of partition plates I08, equally spaced between the end plates I and I01, and arranged to assist in supporting the various rows of keys. The auxiliary keyboard frame work also includes a front plate I09 which is connected to the end plates I06 and I01, as also is the back plate I05. The end plates I06 and IN are fastened, by screws, to extending lugs II5 of the machine base 62, thereby rigidly securing the auxiliary keyboard assembly to the machine proper.

Date and symbol keys The keys of the auxiliary keyboard comprise two rows, of four keys each, of symbol keys H6 and II! (Figs. 1, 3, 10, 16A and 163), three rows, of four keys each, of month keys II8, one row of three tens of days keys II9, three rows, of three keys each, of units of days keys I20, one row of four year keys I2I, and a release key I22 for the date keys. Inasmuch as the date keys and the symbol keys operate in substantially the same manner to position their respective actuators, it is believed that a description of the symbol keys and their associated actuator and printing mechanism will be suificient for the present purpose.

The upper ends of the symbol keys I I6 and I I 1, Figs. 3, 4, and 5, extend through openings in the top plate I04. The right angled extensions of the lower end of the star symbol key H6 and the "CM symbol key II6 each carries a square stud I23 which extends through a vertical slot in a plate I24 connected to the plate I68 and spaced therefrom by two shoulder studs I25. The lower ends of the stems of the TX and IN symbol keys have right angled ex.- tensions, each carrying a square stud I26 (Fig. 5) each of which extends through its respective vertical slot in the partition plate I 08. The studs I26 are in alignment with the studs I23.

A coil spring I2'I (Fig. 3) laced between studs in the stems of the keys H0 and stationary studs in the plate I08 urges said keys upwardly and normally maintains the studs I23 and I26 in contact with the tops of the vertical slots in the plates I24 and I08.

Each of the symbol keys II6 carries a stud I28 (Figs. 3 and 4) which cooperates with its corresponding angular nose on its respective hook I29 formed in a locking detent I30 mounted for horizontal sliding movement between four rollers I3I loose on studs I32, secured in the plate I08 for this row of keys. The studs I28 also cooperate with angular camming surfaces I33, formed in a control plate I34. also slidably supported by the rollers I3I. A spring I35 tensioned between the detent I30 and the plate I 34, urges them forwardly and rearwardly respectively to normally maintain the angular noses of the books on the detent I 30 and the angular camming surfaces I33 of the plate I34, in contact with the studs I28. A wall I36 of a recess in the control plate I 34 (Figs. 3, 15, 16A and 16B) cooperates with a bent-over extension I3'I of a zero latch I33, rotatable on a stationary stud I39 in one of the plates I08. The hook of the latch I38 normally engages a tooth I40 in a symbol actuator I4I to retain said actuator in zero or home position whenever the machine is operated with no symbol key depressed. The actuator I4I (Fig. 3) is mounted to shift horizontally by means of a slot in the rod 19 and by means of notches in the bar 80, which are engaged by the bifurcated end of said actuator I4I.

Depressing one of the symbol keys II6 (Figs. 3, 4, and 15) causes the stud I28 to shift the detent I30 rearwardly until said stud passes beyond the corresponding hook I29 of said detent, whereupon the spring I35 returns the detent forwardly to latch the hook over a flat top surface of said stud I28 to retain the depressed symbol key. Depressing one of the symbol keys II6 also causes the stud I28 in cooperation with the camming surface I33 to shift the control plate I34 forwardly against the action of the spring I35 to rock the latch I38 counter-clockwise out of engagement with the tooth I40 to free the actuator I4I for movement. When no symbol key is depressed the zero latch I38 remains effective, as here shown, and locks the actuator I 4| against movement during machin operation.

The left-hand row of symbol keys In (Figs. 1, 10, and 15) each carries a stud I42 which cooperates with corresponding hooks of a locking detent I43 and the angular camming surfaces of a control plate I44, similar in every respect to the detent I30 and the plate I34 (Figs. 3 and 4) for the right-hand row of symbol keys I I6.

The control plates I44 and I34 for the symbol keys each has a notch in the front end thereof which is engaged respectively by the rounded ends of lugs I45 and I46 integral with a shaft I41 having a tenon I48 which fits loosely in a hole in the end plate I06 (Fig. 6B). The left-hand end of the shaft I41 has a recess therein which loosely engages a tenon on a shaft I49 for the year keys I2I. The shafts I41 and I49 are journaled in holes in the partition plates I08 and similar shafts,

for the other groups of keys are mounted in alignment with, and in exactly the same manner as, the shafts I41 and I49, as clearly illustrated in Figs. 6 and 16. It is therefore evident that the control plates I44 and I34 are tied together and when one of the keys 1 is depressed, forward movement of the plate I44 rocks the plate I34 in unison therewith to rock the zero latch I38 counter-clockwise out of engagement with the tooth I40 of the actuator I4 I The locking detents I43 and I30 (Figs. 3, 11, and 15) are also tied together by means of notches in said detents in cooperation with lugs I50 and II integral with a symbol key release shaft I52 mounted in exactly the same manner as the shaft I41 by means of a tenon on the right end thereof, in cooperation with a recess in the end plate I06 (Fig. 6B) and by means of a recess in the left end thereof in cooperation with a tenon on a. release shaft I53 for the year keys I2I. The shafts I52 and I53 are further rotatably supported by holes in the partition plates I08. The two locking detents for the two rows of symbol keys are tied together so that releasing movement of the shaft I52 will release the depressed key in either of the two rows, in a manner later to be described. It is probably well to here state that each row of keys of the different groups has a locking detent and a control plate similar to those for the symbol keys, and in the case of the units of days keys I20 (Figs. 1 and 16A) and the month keys II8 the control plates and the locking detents are tied together in exactly the same manner as the control plates and locking detents for the two rows of symbol keys H6 and H1.

Locking of keys during machine operation During machine operation the locking detents for the different rows of keys are locked against rearward movement, thus effectively locking the depressed keys of the auxiliary keyboard against release and the undepressed keys against depression. This is accomplished by means of a shaft I54 journaled in the auxiliary keyboard framework (Figs. 10, 12, 13 and 16B) and having cut therein a slot I60 for each of the locking detents of the auxiliary keyboard. The slots I60 are aligned with the locking detents and when the machine is at rest are so positioned that they are parallel to the upper edges of said locking detents, and provide sufficient clearance for the detents to slide back and forth upon depression of their corresponding keys. At the beginning of machine operation the shaft I54 is rotated 90 degrees in a clockwise direction to move the top surface of the slots I60 in said shaft at right angles to the top surface of the locking detents and into the path of the rearward ends of said detents, to lock them against movement during machine operation. The shaft I54 is rocked clockwise to locking position in the following manner:

Secured on the shaft I54 (Figs. 12 and 16B) is a pinion I55, which meshes with teeth in a segment I56 loose on a stud I51 in one of the plates I08. A spring I58 urges the. segment I56 counter-clockwise to normally maintain a nose- I59 thereof in contact. with the. bottom .of a slot in a block I85 fast on the. forward end of a link I66. A spring I61, one end of which is connected to the link I66, urges said'link forward-1y and downwardly to maintain the block I65 and the forward end of said link in an annular groove in a roller I68 loose on a stud I69 secured in the main keyboard framework, and to maintain the slot in the block I65 in contact with the nose I59. The rearward end of the link I66 is slotted to receive a stud I10 in a crank I1I secured on a shaft I12 journaled in the main keyboard framework. Also secured on the. shaft I12 is an arm I13 carrying a stud I14 urged counter-clockwise, by a spring I15, into engagement with the upper end of a pitman I16 mounted for oblique sliding movement by means of a slot in the upper end thereof in cooperation with a stationary stud I18 and by means of the bifurcated lower end of said pitman I16 in cooperation with an annular groove in a hub I19 of an arm I secured on the main drive shaft 83. The spring I15 urges the pitman I16 downwardly to normally maintain a projection I8| thereof in contact with a stud I82 in the arm I80.

Initial movement counter-clockwise of the main drive shaft 83, under influence of the mechanism shown in Fig. 17, carries the arm I80 and the stud I82 in unison therewith to permit the pitman I16 to move downwardly under the influence of the spring I15 which simultaneously rocks the shaft I12 and the crank I1I counterclockwise. Counter-clockwise movement of the crank Ill and the stud I10 frees the link I66 and the segment I56 to the action of the spring I58, which is strong enough to overcome the action of the spring I61 and rock the segment I56 counter-clockwise, to shift the link I66 rearwardly. counterclockwise movement of the segment I56 rotates the pinion I55 and the shaft I54 clockwise approximately degrees (Fig. 11) to cause the slots I60 in said shaft to obstruct movement of the locking detents of the auxiliary keyboard to lock the keys in the manner explained previously. Return movement clockwise of the main drive shaft 83, in the latter part of machine operation, reverses the movement of the parts to restore said parts to normal position, as shown in Fig. 12.

Positioning of the symbol actuator Referring to Figs. 3 to 8 inclusive and Fig. 18, the studs I23 in the star and CM symbol keys II6, cooperate with a lug I83 on an actuator positioning sleeve I84 loose on a shaft I85, opposite ends of which are journaled in the upper extensions II5 of the base 62. The studs I26 in the TX and IN keys II6 cooperate with 9. lug I86 on the sleeve I84, and the corresponding studs in the lower ends of the left-hand row of symbol keys II1 (Fig. 10) cooperate respectively with lugs I81 and 210 on the actuator positioning sleeve I84. Integral with the sleeve I84 is a pinion I88 which meshes with rack teeth in the forward end of the actuator I4 I. The actuator 141 has a vertical slot through which extends a stud I89 in a downward extension of a printer positioning segment I90 rotatably supportedby th shaft 80. A spring I6I tensioned between the segment I90 and the bail 92 of the leading frame 90 is tensioned to normally maintain a beak I92 of said segment in resilient engagement with the bail 92.

By way of illustration, depressing the CM 'key II6 (Fig. 3) moves the stud I23, in the lower end thereof, in the path of the lug I83 on the sleeve I84 and simultaneously rocks the zero latch I38 out of engagement with the tooth I40 in the actuator I4! to free said actuator for movement in unison with the leading frame 90. As previously explained, the arm 84 (Fig. 17) rocks the shaft 89 and the leading frame 90 first counter-clockwise and back to normal position. The spring I9I causes the segment I90 to move in unison with the ball 92 during initial movement counter-clockwise of the leading frame 90 to shift the actuator I4I rearwardly, which in turn rotates the sleeve I84 clockwise until the lug I83 contacts the stud I23 of the depressed symbol key II6. This prevents further movement of the actuator MI and the segment I90 and differentially positions said actuator and said segment in accordance with the depressed symbol key. The leading frame 90 completes its initial movement counter-clockwise independently of the segment I90, flexing the spring I9I. The differential positioning of the segment I90 is transmitted to the symbol type sector 61 (Fig. 3) by a link I93 which connects a rearward extension of said segment I90 to the sector 61.

The symbol type sector 61 is pivotally connected to the upper end of an arm I94 loose onthe printer shaft IN and has connected thereto a control plate I95, also loose on the shaft IOI. When the segment I90 moves away from zero or home position a stud I96 in a forward extension thereof engages an arcuate surface I91 of the tail of a zero elimination pawl I98 pivoted at I99 in the printer framework, and rocks said pawl counter-clockwise against the tension of a spring 200 to disengage the tooth of said pawl from a similar tooth in the plate I95 to free the arm I94 and the sector 61 for printing movement.

After the shaft 89 (Figs. 3 and 17) and the leading frame 90 complete their initial movement counter-clockwise, the roller 86 in cooperation with the camming groove 93 rocks the arm 94 and the aligner shaft 95 clockwise to engage the aligning bar 96 with one of a series of tooth spaces in the downward extension of the segment I90 to align said segment and the printing sector 61 in set positions. After the segment I90 and the sector 61 have thus been positioned continued initial movement clockwise of the printer shaft IOI rocks a printing release trigger I (Fig. 3) counter-clockwise out of engagement with a tooth in the plate I95 to free said plate, the arm I94 and the printing sector 61 to the action of a spring 202 to print a symbol characteristic of the depressed symbol key upon a record sheet 2II (Fig. 2) wound around the platen roll 66.

The different symbols have one interpretation when used in connection with debit items and another interpretation when used in connection with credit items. These different interpretations are given in the two columns on the upper portion of the record sheet 2 headed respectively Debits and Credits. For example:

"CM when used with a debit item means charge memo and when used with a credit item means credit memo. Therefore the .64 CM item in the check column of the record sheet may be a bookkeeping charge and the 100.00 CM item in the deposit column may be a check deposited to the credit of this particular account.

After imprinting is completed the aligning bar 96 (Fig. 3) is disengaged from the segment I90 and return movement clockwise of the leading frame 90 picks up the segment I90 and returns it and the actuator I to home position.

After the actuator MI is returned to zero or home position the depressed symbol key is automatically released to permit the zero latch I38 to be spring-returned clockwise to eifective position, as here shown, to retain the actuator MI in home position whenever the machine is operated with no symbol key depressed. When the actuator HI and the segment I are retained in home or zero position by the latch I38 the zero elimination pawl I98 remains effective as here shown, to obstruct printing movement of the plate I95, the arm I94, and the symbol sector 61.

Release mechanism for the symbol keys Mechanism is provided to automatically release the depressed symbol key at the end of non-adding, adding, and subtracting operations and at the beginning of total and sub-total operations. Connections between the automatic releasing mechanism, and the release key 'II (Fig. 10) for the main keyboard, provide manual means for releasing the symbol keys. A manually operated device is provided for controlling both the automatic and manual releasing means for the symbol keys. The date keys are staydown keys and consequently are never automatically released. However, the release key I22 (Fig. 1) provides a manual means for releasing the depressed date keys. The key releasing mechanism will now be described in detail.

The symbol key release shaft I52 (Figs. 9, 10, 11, and 15) in addition to having lugs I50 and ISI for the locking detents I43 and I30, has a similar lug 203 which cooperates with a rearward projection 204 of a control plate 205 pivoted at 206 to a slide 20! mounted for horizontal sliding movement in the auxiliary keyboard framework by means of a slot, in an upward extension thereof, cooperating with a rod 208 supported by the plates of the auxiliary keyboard and by means of an opening in the back plate I05 through which the rearward end of said slide 20'! extends. The end of the slide 201,

which protrudes through the opening in the back plate I05, has a slot which cooperates with a stud 209 in one end of a link 2I5 (Fig. 10), the other end of which is pivotally connected to one arm of a bell crank 2I6 secured on a key release shaft 2I'I for the main keyboard and journaled in the framework of said keyboard. Also secured on the release shaft 2I1 is a depending arm 2I8 with an inverted V shaped notch which engages a stud 2I9 in an upward extension of a key release bar 220 mounted for horizontal sliding movement by means of two horizontal slots therein, in cooperation with studs HI and 222 fast in the left frame 6|. The manner in which the bar 220 operates the slide 201 to release the depressed symbol keys will be explained later.

A spring 223 (Figs. 9, 10, and 11) urges the control plate205 counter-clockwise to normally maintain an extension 224 thereof in contact with the periphery of a cam 225 secured on a shaft 226 journaled in the end plate I06 and several of the partition plates I08. Secured on the right-hand end of the shaft 226 and protruding through an opening in the case 64 is a knob 221 for manually rotating the cam 225. The knob 221 and the cam 225 have two positions, stay-down and not stay-down, and when said knob and said cam are in stay-down" position, as shown in Figs. 9 and 10, the high portion of the periphery of the cam 225 positions the control plate 205 so that the projection 224 thereof is out of the path of the lug 2533 on the shaft I52. Consequently when the slide 261 is reciprocated, first rearwardly and then back to normal position, either manually or automatically, in a manner presently to be described, no movement is imparted to the shaft and therefore the depressed symbol key will not be released.

Turning the knob 221 to not-stay-down position, as shown in Fig. 11, moves a low portion of the periphery of the cam 225 opposite the extension 224 (see also Figs. 9, l5, and 1613) to permit the spring 223 to rock the control plate 235 counter-clockwise to move the projection 204 thereof upwardly into the path of the lug 203. This causes the reciprocating movement of the slide 201 to rock the shaft I52, and the lu s I50 and II first counter-clockwise to shift the looking detents M3 and I30 rearwardly to disengage the corresponding hook I29 of either of said detents from the studs M2 or I28 in the depressed symbol key II1 or IIB to permit said key to be spring-returned upwardly to undepressed position. Two notches in the periphery of the earn 225 (Figs. 63, 9 and 11) corresponding to the stay-down and the not-stay-down positions of said cam, in cooperation with a stud 2 33 in a spring-pulled slide 229, maintains'the cam 225, the shaft 226, and knob 221 in set positions. The slide 229 is slidably mounted on the shaft 226 by a slot therein in cooperation with said shaft. 7

The release key N (Fig. 10) has pivotally connected thereto one end of a toggle link 230,-the other end of which is bifurcated to straddle a stud 23I in the bar 22!]. Depressing the release key N, by means of the link 230, shifts thebar rearwardly, which by means of the'stud H9 in cooperation with the arm 2I8 rocks the shaft 261 and the bell crank 2I6 counter-clockwise. Countenclockwise movement of the bell crank 2E5, by means of the link 2I5, shifts the slide 281 rearwardly to release the depressed symbol key in the manner explained above.

Pivoted on a stud 232 in the bar 225 is a key release pawl 233 urged clockwise by a torsion spring 235 to normally maintain the bottom surface of a hook 235 thereon in contact with a roller mounted on a disk 231 secured on the main drive shaft 83. It will be recalled, by referring to Fig. 17, that the main shaft 83 is oscillated first counter-clockwise and back to normal position. In non-adding, adding, and subtracting operations initial movement counter-clockwise of the main shaft 83 and the disk 231 causes the roller 236 to move beyond the hook 235, whereupon the torsion spring 234 urges the pawl 233 clockwise to latch said hook 235 over said roller Return movement clockwise of the shaft 23 and the disk 231 causes the roller 226 to engage the hook 235 to shift the bar 222 rearwardly to rock the shaft 2 l1 counter-clockwise, which by means of the bell crank 255 and the link 2Z5 shifts the slide 251 rearwardly to rock the symbol key release shaft I52 counter-clockwise, when the knob 221 (Fig. 6B) is in not stay-down position, to release the depressed symbol key. Before the disk 231 and the roller 23B are fully returned clockwise to normal position an upward extension 238 of the pawl. 233 engages a stationary stud 240 to disengage the hook 235 from the roller 235 to permit return of the bar 22il-and connected mechanism to normal position under influence of the springs I35 (Fig. 15) tensioned between the locking detent-s and the control plates.

In the beginning of total and sub-total operations it is necessary to shift the bar 220 rearwardly in order to release any amount keys that have been inadvertently or carelessly depressed. This shifting of the bar 225 likewise releases any depressed symbol key when the knob 221 is in not stay-down position.

A latch 24I (Fig. 10), for the sub-balance key N, is pivoted on a stud 242 in the left frame BI, and has pivotally connected to the lower end thereof a lever 2&3 carrying a stud 244 which cooperates with a tail 245 of a key release pawl 246 fulcrumed at 221 to a downward extension of the bar 221. The pawl 243 has a notch 248 adapted to engage a roller 249 on a lever 259 pivoted on a stationary stud 25I in the frame 6|. A spring 252 urges the lever 25!! clockwise to normally maintain a camming surface of said lever in contact with a roller 253 mounted on the disk 231. The torsion spring 234 tends to engage the pawl 2 with the roller 2%. However, a spring 254, one end of which is connected to the lever 243, is strong enough to overcome the action of the spring 234 and maintain the pawl 246 disengaged from th roller 249 and to normally maintain the lever 243 in contact with a collar 255 on the stud 222.

Selecting any one of the totalizers for a total or sub-total operation rocks the lever 2:23 clockwise, Fig. 10, in the manner shown in the patents referred to at the beginning of this specification, to permit the spring 23 to urge the notch 248 in the pawl 225 into engagement with the roller 249. Initial movement counter-clockwise of the shaft 83 and the disk 231 causes the roller 253 to engage a hump 255 on the camming urface of the lever 255 to rock said lever counterclockwise to shift the pawl 246 and th bar 22s rearwardly to release any depressed amount symbol keys at the beginning of machine operation. After the keys have been released, the pawl 246 is disengaged from the roller 2:29 by a roller 251, carried by the disk 231, engaging a raised portion 258 of said pawl 24% and rocking said pawl clockwise. This permits the bar 220 and associated mechanism to be immediately spring-returned forwardly to normal position, as here shown. Before the roller 251 moves away from the raised surface 25%;, upon return movement clockwise of the disk 231, the lever 243 is released to the action of the spring 254, which returns said lever counter-clockwise to normal position, as here shown, in which position the stud 244 in cooperation with the tail 225 retains the notch 248 out of engagement with th roller 249 when the roller 251 moves beyond the raised surface 258.

Datekeys As previously stated, the date keys are not automatically released at the end of machine operations, but manual means is provided for releasing these keys when desired. Referring to Figs. 1, 6A, 16A, and 18, each of the three rows of month keys I 58 has a locking detent 259, and a control plate 265, which are similar in ever. respect to the locking detent I35 and the control plate I34 (Figs. 3 and i) for the symbol keys H5. vThe locking detents for the month group of keys are tied together by means of lugs 256 on a shaft 251 and the control plates 255 are tied together by means of lugs 258 on a shaft 258. The control plates 265 control a zero latch 210 which cooperates with a month-actuator 2" to position a month printer control segment 212 (Fig. 18) and its corresponding printing sector in exactly the same manner as explained for the actuator mechanism for the symbol keys. The shaft 261 has another lug 213 which cooperates with the rounded nose of a release arm 214 secured on the shaft 208.

The three tens of days keys II9 hav a locking detent 215 and a control plate 218, said control plate adapted to control a zero latch 211 for an actuator 218, which positions a printer control segment 219 (Fig. 18) and its corresponding printing sector in accordance with the depressed key II9. A notch in the locking detent 215 engages the rounded end of a lug 280 on a shaft 28I and another lug 282 on said shaft 28I is adapted to be engaged by the rounded nose of an arm 283, similar to the arm 214, and secured on the shaft 208.

Each of the three rows of units of days keys I (Figs. 1, 6A, 16A, and 18) has a locking detent 284 and a control plate 285, and said looking detents are tied together by mean of lugs 286 on a shaft 281 and said control plates 2.85 are tied together by means of notches in the forward ends thereof, in cooperation with the rounded ends of lugs 288 integral with a shaft 289. When one of the units of days keys I20 is depressed, the control plates 285 rock a Zero latch 290 out of engagement with a units of days actuator 29I, thus permitting said actuator 29I to position its corresponding segment 292 (Fig.

18) and the units of days printing sector in accordance with the depressed key. The shaft 281 carries a lug 293 (Fig. 163) which cooperates with the rounded end of an arm 294 fast on the shaft 208.

The single roW of year keys I2I has a, locking detent 285 and a control plate 296, said locking detent being notched to receive the rounded end of a lug 291 integral with the shaft I53, which also has integral therewith a depending lug 298 which cooperates with the rounded end of an arm 209 secured on the shaft 208. The forward end of the control plate 296 is notched to receive the end of a lug 300, fast on the shaft I49, which also has integral therewith a similar lug 30I, which engages a notch in the forward end of a control plate 302 which cooperates with a zero latch 303 for the year actuator 304. When one of the year keys is depressed, the plates 2% and 302 are rocked forwardly in unison to rock the latch 303 out of engagement with the actuator 304 to permit said actuator, its associated segment 305 (Fig. 18) and printing sector to be positioned commensurate with the value of the depressed year key in exactly the same manner as explained for the symbol keys.

The shafts 261, 28I, 281, I53, and I52 (Figs. 16A and 1613), for coupling the locking detents of the different groups of keys, are journaled in the plates that form the framework for the auxiliary keyboard assembly and are maintained in axial alignment by means of tenons on the end of one shaft in cooperation with a, recess in the end of the adjacent shaft. The shafts 269, 289, I49 and M1, for coupling the different control plates, are mounted in axial alignment in the auxiliary keyboard framework in exactly the same manner as explained for the coupling shafts for the locking detents.

By referring to Fig. 1 it will be seen that the "release key I22 is in alignment with one of the rows of the units of days keys I20, and is depressibly mounted in the auxiliary keyboard framework in exactly the same manner as the CM symbol key IIG (Fig. 4), which has been fully explained hereinbefore. Depressing the release key I22 (Figs, 14: and 16B) causes a stud 308 therein, in cooperation with the forward end of an arm 301 secured on the shaft 238, to rock said arm and said shaft counter-clockwise against the action of a torsion spring 308. Counter-clockwise movement of the shaft 208 causes the arms 214, 283, 294, and 299, which are secured thereon, in cooperation with their corresponding lugs 213, 282, 293, and 298, to rock the shafts 261, 28I, 281, and I53 counter-clockwise to shift the locking detents for the different groups of date keys rearwardly to release the depressed date keys.

When the pressure is removed from the release key I22, the spring 308 returns the shaft 208 and the arms mounted thereon to normal position and the springs tensioned between the locking detents and the control plates for the date keys restore said detents and plates to normal position.

While the form of mechanism herein shown and described is admirably adapted to fulfill the objects primarily stated, it is to be understood that it is not intended to confine the invention to the one form or embodiment herein disclosed, for it is susceptible of embodiment in various forms all coming within the scope of the claims which follow.

What is claimed is:

1. In a calculating machine, the combination of a plurality of rows of keys; an actuator controlled by said rows of keys; a movable means to latch the actuator in home or a neutral position; a slidable control plate for each row of keys, one of said control plates being operatively connected to the latching means; and separately mounted means to connect the control plates so that depression of any key in any of the rows will cause the control plate connected to the latching means to slide to thereby move the latching means to ineffective position.

2. In a calculating machine, the combination of a plurality of rows of keys; an actuator controlled by said rows of keys; means effective when no key is depressed to latch the actuator in a neutral position during machine operations; a control plate for each row of keys, one of said plates being connected to the latching means; and means including a shaft and a projection on i said shaft for each control plate to connect said control plates for unitary movement so that depression of any key in any row will move the latching means to ineffective position.

3. In a machine of the class described, the combination of a plurality of rows of keys, constituting one group or one denominational order; an actuator controlled by said rows of keys; means to drive the actuator; means, effective when no key is depressed, to retain the actuator against movement by the driving means; a control plate for each row of keys, one of said control plates connected to the retaining means; a shaft; means on the shaft to connect the control plates for unitary movement, whereupon depression of any key in the group moves the retaining means to ineffective position; a rotatable member connected to the actuator and adapted to be operated thereby; and means on the member co-- operating with the depressed key to position the actuator in accordance with said depressed key.

4. In a calculating machine, the combination of an actuator; means to impart reciprocating movement to the actuator during machine operations; a rack on the actuator; a member having a gear thereon meshing with the rack whereby the member is rotated by the actuator upon reciprocation of the actuator; projections on the member; and a plurality of rows of keys, a plurality of said keys cooperating with each of the projections to control the positioning of the actuator.

5. In a machine of the character described, the combination of a plurality of rows of keys; a single actuator for the rows of keys movable in a plane parallel with the arrangement of the rows of keys; a means to reciprocate the actuator each machine operation; a shaft under said rows of keys; a member rotatable on said shaft and driven by the actuator upon reciprocation thereof; and means whereby depressing any one of the keys in the several rows controls the rotation of the member to control the extent of the initial movement of the single actuator to cause the single actuator to assume a position determined by the depressed key.

6. In a machine of the class described, the combination of a plurality of rows of depressible keys; an actuator; means to drive the actuator during each machine operation; a shaft mounted below said rows of keys; a member rotatable on said shaft and extending across said rows of keys at right angles thereto; means for rotating the member by the actuator; and a plurality of means on the member selectively cooperable with the keys when depressed to limit the travel of the member to position the actuator to a position determined by the depressed key.

7. In a machine of the class described, the combination of a group of keys arbitrarily arranged in a plurality of rows; a single actuator associated with said group of keys, the actuator and rows of keys arranged in fixed planes parallel with each other; a control device rotatably mounted at right angles to the plane of movement of the actuator and extending across the planes of the rows of keys; a geared connection between the control device and said single actuator; and tappets on the control device coacting with the keys, said tappets being less in number than the number of keys coacting therewith, each tappet coacting with a plurality of keys to control the differential movement of the actuator.

8. In a machine of the class described, the combination of a group of keys being arbitrarily arranged in a plurality of rows; a single actuator controlled by said group of keys, the actuator movable in a plane parallel with the rows of keys, said planes being in fixed relationship with each other; a control device rotatable about a support mounted at right angles to the plane of movement of the actuator; a geared connection between the control device and said single actuator; and tappets on the control device located beneath the keys, said tappets being less in number than the number of keys located above the tappets, each tappet coacting with a plurality of keys to control the differential movement of the actuator.

9. In a machine of the class described, the combination of a group of keys arbitrarily arranged in a plurality of rows; a single actuator controlled by said group of keys, the actuator movable in a plane parallel with the planes of the rows of keys; a control device rotatable about a support mounted at right angles to the plane of movement of the actuator, said control device having tappets integral and rotatable therewith to engage the keys, said tappets being less in number than the number of keys and each tappet coacting with a plurality of keys to control the differential movement of the actuator; a geared connection between the control device and said single actuator; and main operating means to operate the actuator only after one of the keys has been moved into position to coact with a tappet.

10. In a machine of the class described, the combination of a plurality of rows of keys constituting one group or one denominational order; a single actuator for said rows of keys; means to drive the actuator; a member operatively connected to the actuator and cooperating with the keys to position the actuator; a movable means, effective when no key is depressed, to prevent movement of the actuator by the driving means; a control plate for each row of keys and operable by the depression of any one of said keys, one of which plates is connected to the movable means; rockable means; and means on the rockable means engaging the control plates to connect the control plates for unitary movement, whereupon depression of any one of the keys causes the rocking of the rockable means to cause said one control plate to move the preventing means to inefiective position.

11. In a calculating machine, the combination of a plurality of rows of keys, constituting one group or one denominational order; an actuator controlled by the rows of keys; means to drive the actuator; a movable means to latch the actuator in a neutral position when no key is depressed; a control plate adjacent each row of keys; means on each key engaging the control plate adjacent thereto to operate the adjacent control plate; means connecting the latch to one of said control plates for movement thereby; separately mounted means connecting the control plates for joint operation so that said one control plate can move the latching means to ineffective position upon depression of any key, to permit the driving means to drive the actuator; and means operatively connected to the actuator and cooperating with the depressed key to position the actuator in accordance with the depressed key.

WILLIAM H. PETIT. 

